Loose-leaf binder



Jan. 11 1927. 1,614,080

G. w. NEWMAN Loos1 LEAF BINDER File sept. 23, 1922 @4l-Inman), l

YE EI gon. Newman.

CTL

Patented Jan. 11, 1927.

STATES PATENT orrics.

GEORGE VASI-IINGTON NEIVMAN, OF CHICAGO, ILLINOIS, ASSIGNOR, BY MESNEAS- SIGNMENTS, TO WILSON-JONES COMPANY, OF CHICAGO, ILLINOIS, .ACORPORA- TICE OF MASSACHUSETTS.

LOOSE-LEAF BINDER.

Application filed September 23, 1922. Serial No. 590,144.

lIhis invention relates to loose leaf binders of that type in which theupper cover is removably locked to the impaling posts.' It is an objectof this invention to provide an improved structure embodying,

i among other features, novel mechanism for locking the upper cover tothe impaling posts. Y

Other and further objects will be apparent from the following desciptionand disclosures.

In the accompanying drawings which illustrate preferred embodiment ofthis invention and in which similar reference numerals refer to similarfeatures in the different views:

Figure 1 is a perspective view of an assembled binder.

Figure 2 is an enlarged vertical section through the upper clampingmember.

Figure 3 is an enlarged horizontal section through the upper clampingmember.

Figure 4 is a section on the line 4 4 of Figure 2 looking in thedirection of the arrows.

Figure 5 is a section on the line 5-5 of Figure 2 looking in thedirection of the arrows.

Figure 6 is an enlarged end view of the clamping member.

In the drawing, the binder is represented as comprising an upper cover 1and a lower cover 2 between which the loose leaves are removablyimpaled, upo-n the posts 3, which are secured upon the lower cover andextend through the upper cover and through a hollow clamping member 4secured to the rear portion of the upper cover. Shiftable mec-hanism isprovided within the hollow clamping member for locking the sametogether' with the upper cover upon the impaling posts in any adjustedposition of the cover according to the thickness of the volume ofcontained leaves.

rIhe hollow clamping member 4 is preferably made oblong in cross sectionwith rounded edges and of sheet metal with suitable spaced apertures toreceive the impaling posts 3. YIhre ends of the member are preferablyclosed by suitable end plugs 5 and G.

A pair of slidablemembers 7 and 8 are supported within the hollowclamping niember 4 and are provided with notches 9 to engage the posts3. These slidable members are preferably formed of sheet-metal plates,the member 8 being provided with oppositely flaring portions 10 in itsedges for centrally supporting the same in the hollow member; while themember 7 is supported upon the bottom of the said clamping member.

An adjusting screw 11 is journalled in the right-hand plug 5 and in abracket 12, and extends through an internally threaded tubular socket 13integral with or connected 'to the slidable member 7 g the forward endof the screw being rotatably anchored to the member 8 which is slightlyspaced from the member 7 when in operative position, while the rear endis provided with a key or wrench head projecting into a socket in theplug. 5. A pin 14 may extend through the clamping member 4 and through anotch or slot in the end of the slidable member 7 for guiding andlimiting its movements, and the edge of the slidable member 7 oppositethe socket 13 is preferably curled upwardly in conformity with the innersurface of the clamping member 4 to provide greater stability.

In the operation of the binder, a key is adapted to be applied to theprotruding end of the screw 11 for rotating the same. During onedirection of rotation, the slidable members 7 and 8 will be contractedor shifted together tol unlock the same from engagement with theimpaling posts 3, whereby the cover 1 may be removed for the insertionor removal'of loose leaves. The opposite direction of rotation of thescrew will spread or expand the slidable members 7 and 8 so that theywill simultaneously engage the impaling posts and lock the cover inposition as is obvious.

I am aware that numerous details of construction may be varied through awide range without departing from the principles of this invention, andI therefore do not purpose limiting the patent granted other wise thannecessitated by the prior art.

I claim as my invention:

In a loose leaf binder, a base, a pair of impaling posts rising fromsaid base, a cover, a fiat tubular member hinged to said cover andprovided with apertures for receiving said impaling posts, a pair ofrelatively slidable plates in said tubular member, one plate havin` acoiled margin internal-ly threaded and fitting one side of the tubularmember, the opposite margin of said plate beingcoiled to fit theopposite side of the tubular member, the other plate having its margineprovided with oppositely flaring guide por tions, and a screw connectin`said plates and adapted to be operated from the exterior oi' the binder.v

In testimony whereof l have hereunto subscribed my naine.

GEORGE VASHNGTON 'BIEN/*MAN

